A game similar to rock, papers, siccors. Usually played to determine which one of two people will have to perform a given act. One person calls out either odds or evens. They then proceed to count to three and each presents any number of fingers on one hand. The sum of the fingers from both participants is added up. If the sum is even the person who called evens wins, and vice versa.
Timmy had to fuck the fat chick after a heated battle of odds and evens with Frankie.